The present invention relates to a kind of manufacturing methods of basal seat area semi-finished product to have follow steps:1) patient for recording and digitizing oral conditions, is generated, or provide a kind of patient of digital three-dimensional oral cavity model oral conditions in the oral cavity model of digital three-dimensional patient2) implement the first calculating for calculating wherein the first model of digital three-dimensional (one) basal seat area, wherein oral cavity model oral condition is calculated as first3) it carries out second to calculate, wherein the denture fixing device semi-finished product of digital three-dimensional model (component B) calculate the denture fixing device of the first model (one), and wherein at least local volume is added to threedimensional model (one) basal seat area With4) denture fixing device semi-finished product rapid prototype development method is made, with rapid prototype development method, method of the semi-finished product of the method for CAM, and digital three-dimensional model (B groups) artificial tooth as basis CAM.The present invention also relates to device for implementing such a method and a kind of basal seat area semi-finished product manufactured using this method.